Ordnance



c.H.cAsPAR."

ORDNANCE.

APPLICATION FILED MAR. 28. I918,

Patented July 15, 1919.

w Aw 0.058. I Tasmania-ad 'cba'cem.-' v

. -Be it known that I, CHARLES H. OAsPAn,

1 Philadelphia,

' UNITED STATES PATENT QFFIGE CHARLES H. CASPAR, 0F PHILADELPHIA, rE-NNsY-LvANrA.

a citizen of the United States, residing in Pennsylvania, have invented certain Improvements in Ordnance, of wh1ch the following is a specification.

My invention relates to ordnance, and the object of my invention is to increase the effective range of artillery, particularly heavy guns. My inventlon comprises means whereby an increased amount of sustained pressure from a charge of powder or other explosive may be provided, with substanially no 11mitation in the magnitude of the explosive charge, and

These and other features of my invention are more fully described hereinafter, reference being had to the accompanying drawings, in which:

Figures 1 and 2, are, respectively, a lontudinal section and a cross section of sufcient of a gun barrel and its breech to illustrate my invention, and

Figs. 3 and 4, are similar views illustrati ing a modified construction Within the scope 1 of my invention.

' Ord nance as usually constructed comprises a barrel having a bore of substantially uniform internal diameter throughout, the breech portion of which bore receives acharge of powder or other explosiv'e set behind a projectile which is driven I from the gun by the pressure exerted by the exploding charge. Under ordinary circumstances a gun oi this type presents the smallest possible space i for the charge of explosive and the shortcast time of sustained pressure, which can only occupy the bore between the breech block and the movin projectile. The muzzle velocity of a pro ectile discharged from a gun of this type is such that up to the present time their range has been approximatelv not more than twenty-six miles.

Ordnance experts agree that if the tlme of sustained pressure within the bore of the i gun or the magnitude of the explosive charge could be increased, greater flight of the projectile would be secured. Increase "of the time of sustained pressure within the bore of the gun and provision for increase in the magnitude of the explosive charge is the object of my invention, and

\ in order to provide for such conditions, the breech l of the gun is provided wlth a plu- ORDNANCE.

Specification of Letters mat.

atna Jul .15, 1919.

' Application filed March 28, 1918." Serial no. 225,306.

j'rality "of chambers for the reception of zle velocity of the projectile as to insure a range of substantially any distance desired.

In Figs. 1 and 2, I have shown'a gun having four chambers for the reception of powder or other explosive charges surrounding the central bore or barrel containing the projectile; "such chambers communicating at suitable points with the central bore to insure the passage of the pressure to the same behind the projectile.

In Figs. 3 and 4, a similar construction is illustrated, but in this arrangement the wall 1* of the breech containing the chambers 2 for the extra powder charges is in the form of a cylinder, instead of the inde pendent semi-cylindrical portions each containing a chamber, as in the structure shown in Figs. 1 and 2.

I claim:

1. Ordnance comprising a barrel having a bore for receiving a projectile and an enlarged breech, a plurality of explosivecharge-receiving chambers formed within said enlarged breech, and gas passages connecting said chambers with the bore of said barrel behind the projectile whereby the force developed in said chambers is directed against the rear of the projectile to drive it from the barrel of the gun.

2. Ordnance comprising abarrel having a bore for receiving a projectile and an enlarged breech in which the rear end of said bore is centrally disposed, a plurality of explosive-charge-receiving chambers formed within said enlarged breech, and gas passages disposed at equidistant points and connecting said chambers with the bore of the barrel behind the projectile.

3. Ordnance comprising a barrel having a bore for receiving a projectile and an enlarged breech in which the rear end of said bore is centrally disposed, a plurality of explosive-charge-receiving chambers aralleling said bore and formed within said an larged breech,and gas passages disposed at equidistant points and connecting said chambers with the-boreof the barrel be hind the projectile.

larged breech, a plurality of explosive charge-receiving chambers. formed wit hi ll I 7,;

said enlarged breech, and gaspassa'ges connectlng the rear ends ofsald chambers with the-b'ore -of said bamr'el behind the projectile whereby the force developed in, saldf ,QH LES HQCASLPAR.

Gopiu; 01 this] gauntmay be obtained. to; flmcents each, by addressing fl e. ggpig igg lqper qg Xmtsytg chambers is directed against the rearfof the" 1 prcjectile to drive it from thebarrel cf the 

